Ⅰ.Application note

VGdd79SxxxN0S1 series wireless module, based on SEMTECH LLCC68 high-performance wireless transceiver chip design, is a small, low-power, long-distance two-way wireless transceiver module.

The LLCC68 subGHz radio transceiver is ideal for long-range wireless applications. The effective receiving current consumption of 4.2mA is specially designed for battery-powered applications. LLCC68 can transmit high-efficiency integrated power lifiers up to +22 dBm. LLCC68 supports LoRa modulation for LPWAN use cases and (G) FSK modulation for traditional use cases. It is highly configurable to meet different application requirements used by industry and consumers. The device provides LoRa® modulation™ compatible with the emtech transceiver used by LoRaWAN™. The specifications issued by the LoRa Alliance™. The radio is suitable for systems that comply with radio regulations, including but not limited to ETSI EN 300 220, FCC CFR 47 Part 15,Chinese regulations Requirements and Japan ARIB T-108. Continuous frequency coverage from 150 MHz to 960 MHz, allowing support of all major sub GHz ISM bands in the world

The module integrates all radio frequency related functions and devices. Users do not need to have a deep understanding of radio frequency circuit design, and can use this module to easily develop wireless solutions and wireless IoT devices with stable performance and high reliability

1. Main features of the product:
   LoRa and FSK modem
   151 dB maximum link budget (LLCC68)
   +22 dBm or +15 dBm high efficiency PA
   6 mA low RX current
   Integrated DC-DC converter and LDO
   Programmable bit rate from 1.76 kbps to 62.5 kbps LoRa and 300 kbps FSK
   High sensitivity: as low as -129 dBm
   88 dB blocking immunity at 1 MHz offset
   19 dB co-frequency rejection in LoRa mode
   FSK, GFSK, MSK, GMSK and LoRa modulation
   Built-in bit synchronizer for clock recovery
   Automatic channel activity detection (CAD) with ultra-fast AFC
   The data rate of LoRaWAN includes 125kHz SF7 to SF9, 250kHz SF7 to SF10 and 500kHz SF7 to SF11.
2. application：
   Smart meter
   Supply chain and logistics
   Building automation
   Agricultural sensor
   Smart City
   Retail store sensors
   Asset tracking
   Street lights
   Parking sensor
   Environmental sensor
   Medical care
   Safety and security sensors
   Remote control application